﻿/************************************************************************

   Extended Silverlight Toolkit

   Copyright (C) 2010-2012 Xceed Software Inc.

   This program is provided to you under the terms of the Microsoft Public
   License (Ms-PL) as published at http://extendedsilverlight.codeplex.com/license

   Please purchase a commercial version of this toolkit if you are using
   it in a commercial product. The commercial versions support the project,
   and also include more features for each control, priority support,
   source code, updates, removed watermark, and a proprietary license.

   Visit http://xceed.com and follow @datagrid on Twitter.

  **********************************************************************/

using System.Windows;

namespace Xceed.Silverlight.DragDrop
{
  internal class DragDropHelper
  {
    public static readonly Size DragSize = new Size( 4, 4 );

    public static bool IsMouseMoveDrag( Point initialPosition, Point currentPosition )
    {
      Rect dragRect = new Rect(
        initialPosition.X - DragSize.Width,
        initialPosition.Y - DragSize.Height,
        DragSize.Width * 2,
        DragSize.Height * 2 );

      return !dragRect.Contains( currentPosition );
    }
  }
}
